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Title:
Responses of transition region models to magnetic field geometry and downflow velocities
Authors:
Athay, R. G.
Affiliation:
AA(High Altitude Observatory, Boulder, CO)
Publication:
Astrophysical Journal, Part 1, vol. 263, Dec. 15, 1982, p. 982-986. (ApJ Homepage)
Publication Date:
12/1982
Category:
Solar Physics
Origin:
STI
NASA/STI Keywords:
Chromosphere, Energy Budgets, Magnetic Field Configurations, Solar Atmosphere, Solar Corona, Solar Magnetic Field, Conductive Heat Transfer, Energy Transfer, Flow Velocity, Magnetohydrodynamic Flow, Plasma Temperature, Radiative Transfer, Solar Spectra, Stellar Models, Temperature Dependence
DOI:
10.1086/160565
Bibliographic Code:
1982ApJ...263..982A

Abstract

Models of the chromosphere-corona transition region in which energy is supplied by thermal conduction and downflow of hot material and lost by radiation are investigated for different magnetic field geometries and for different dependences of downflow velocity on the local temperature. It is shown that neither the field geometry nor the dependence of velocity on temperature are important factors in the comparison of empirical and theoretical emission measures. Each of the models works well for T higher than 250,000 K but fails badly for temperatures lower than that.

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